It now says on my endto check date and time, seems like it has issues with the fact it is 2019 and no longer 2018, but I do have option to continue (under advanced button)
At least able to go to it with a few more clicks.

Hope ones working on it can solve it and figure out what wentwrong so it can be corrected.

Thought maybe the info might be helpful in locating where the issue is located.
Once agreed to still visit after the warning it doesnt give me warning after closing and re-opening browser and website.

modhoster.com Certificate Error

Gonna 'me too' here, I cannot get in at all in Firefox because it refuses to enter any site with an expired certificate. I can only get in via Chrome by clicking to get around the message every time I log in.

EDIT: The issue here is the modhoster.com url not modhoster.de - is modhoster.com abandoned?

Gonna 'me too' here, I cannot get in at all in Firefox because it refuses to enter any site with an expired certificate. I can only get in via Chrome by clicking to get around the message every time I log in.

EDIT: The issue here is the modhoster.com url not modhoster.de - is modhoster.com abandoned?

No they have this SAME issue every NEW YEAR. Whoever does the Domain/Certificates could care less about the English.com domain!